TY - JOUR
T1 - Associations of Early Kidney Disease With Brain Magnetic Resonance Imaging and Cognitive Function in African Americans With Type 2 Diabetes Mellitus
AU - AA-DHS MIND and ACCORD MIND Investigators
AU - Freedman, Barry I.
AU - Sink, Kaycee M.
AU - Hugenschmidt, Christina E.
AU - Hughes, Timothy M.
AU - Williamson, Jeff D.
AU - Whitlow, Christopher T.
AU - Palmer, Nicholette D.
AU - Miller, Michael E.
AU - Lovato, Laura C.
AU - Xu, Jianzhao
AU - Smith, S. Carrie
AU - Launer, Lenore J.
AU - Barzilay, Joshua I.
AU - Cohen, Robert M.
AU - Sullivan, Mark D.
AU - Bryan, R. Nick
AU - Wagner, Benjamin C.
AU - Bowden, Donald W.
AU - Maldjian, Joseph A
AU - Divers, Jasmin
N1 - Publisher Copyright:
© 2017 National Kidney Foundation, Inc.
PY - 2017/11
Y1 - 2017/11
N2 - Background Relationships between early kidney disease, neurocognitive function, and brain anatomy are poorly defined in African Americans with type 2 diabetes mellitus (T2DM). Study Design Cross-sectional associations were assessed between cerebral anatomy and cognitive performance with estimated glomerular filtration rate (eGFR) and urine albumin-creatinine ratio (UACR) in African Americans with T2DM. Setting & Participants African Americans with cognitive testing and cerebral magnetic resonance imaging (MRI) in the African American−Diabetes Heart Study Memory in Diabetes (AA-DHS MIND; n = 512; 480 with MRI) and Action to Control Cardiovascular Risk in Diabetes (ACCORD) MIND (n = 484; 104 with MRI) studies. Predictors eGFR (CKD-EPI creatinine equation), spot UACR. Measurements MRI-based cerebral white matter volume (WMV), gray matter volume (GMV), and white matter lesion volume; cognitive performance (Mini-Mental State Examination, Digit Symbol Coding, Stroop Test, and Rey Auditory Verbal Learning Test). Multivariable models adjusted for age, sex, body mass index, scanner, intracranial volume, education, diabetes duration, hemoglobin A1c concentration, low-density lipoprotein cholesterol concentration, smoking, hypertension, and cardiovascular disease were used to test for associations between kidney phenotypes and the brain in each study; a meta-analysis was performed. Results Mean participant age was 60.1 ± 7.9 (SD) years; diabetes duration, 12.1 ± 7.7 years; hemoglobin A1c concentration, 8.3%±1.7%; eGFR, 88.7 ± 21.6 mL/min/1.73 m2; and UACR, 119.2 ± 336.4 mg/g. In the fully adjusted meta-analysis, higher GMV associated with lower UACR (P < 0.05), with a trend toward association with higher eGFR. Higher white matter lesion volume was associated with higher UACR (P < 0.05) and lower eGFR (P < 0.001). WMV was not associated with either kidney parameter. Higher UACR was associated with lower Digit Symbol Coding performance (P < 0.001) and a trend toward association with higher Stroop interference; eGFR was not associated with cognitive tests. Limitations Cross-sectional; single UACR measurement. Conclusions In African Americans with T2DM, mildly high UACR and mildly low eGFR were associated with smaller GMV and increased white matter lesion volume. UACR was associated with poorer processing speed and working memory.
AB - Background Relationships between early kidney disease, neurocognitive function, and brain anatomy are poorly defined in African Americans with type 2 diabetes mellitus (T2DM). Study Design Cross-sectional associations were assessed between cerebral anatomy and cognitive performance with estimated glomerular filtration rate (eGFR) and urine albumin-creatinine ratio (UACR) in African Americans with T2DM. Setting & Participants African Americans with cognitive testing and cerebral magnetic resonance imaging (MRI) in the African American−Diabetes Heart Study Memory in Diabetes (AA-DHS MIND; n = 512; 480 with MRI) and Action to Control Cardiovascular Risk in Diabetes (ACCORD) MIND (n = 484; 104 with MRI) studies. Predictors eGFR (CKD-EPI creatinine equation), spot UACR. Measurements MRI-based cerebral white matter volume (WMV), gray matter volume (GMV), and white matter lesion volume; cognitive performance (Mini-Mental State Examination, Digit Symbol Coding, Stroop Test, and Rey Auditory Verbal Learning Test). Multivariable models adjusted for age, sex, body mass index, scanner, intracranial volume, education, diabetes duration, hemoglobin A1c concentration, low-density lipoprotein cholesterol concentration, smoking, hypertension, and cardiovascular disease were used to test for associations between kidney phenotypes and the brain in each study; a meta-analysis was performed. Results Mean participant age was 60.1 ± 7.9 (SD) years; diabetes duration, 12.1 ± 7.7 years; hemoglobin A1c concentration, 8.3%±1.7%; eGFR, 88.7 ± 21.6 mL/min/1.73 m2; and UACR, 119.2 ± 336.4 mg/g. In the fully adjusted meta-analysis, higher GMV associated with lower UACR (P < 0.05), with a trend toward association with higher eGFR. Higher white matter lesion volume was associated with higher UACR (P < 0.05) and lower eGFR (P < 0.001). WMV was not associated with either kidney parameter. Higher UACR was associated with lower Digit Symbol Coding performance (P < 0.001) and a trend toward association with higher Stroop interference; eGFR was not associated with cognitive tests. Limitations Cross-sectional; single UACR measurement. Conclusions In African Americans with T2DM, mildly high UACR and mildly low eGFR were associated with smaller GMV and increased white matter lesion volume. UACR was associated with poorer processing speed and working memory.
KW - African American
KW - albuminuria
KW - brain
KW - chronic kidney disease (CKD)
KW - cognitive performance
KW - estimated glomerular filtration rate (eGFR)
KW - magnetic resonance imaging (MRI)
KW - neurocognitive function
KW - type 2 diabetes mellitus (T2DM)
KW - urine albumin-creatinine ratio (UACR)
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U2 - 10.1053/j.ajkd.2017.05.006
DO - 10.1053/j.ajkd.2017.05.006
M3 - Article
C2 - 28648301
AN - SCOPUS:85021108490
SN - 0272-6386
VL - 70
SP - 627
EP - 637
JO - American Journal of Kidney Diseases
JF - American Journal of Kidney Diseases
IS - 5
ER -